package com.bittech.servlet.smallfileserver.web.config.filter;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

/**
 * Author: secondriver
 * Created: 2018/8/27
 */
@WebFilter(urlPatterns = {"/*"})
public class CORSFilter implements Filter {
    
    @Override
    public void init(FilterConfig filterConfig) {
    
    }
    
    @Override
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
        HttpServletResponse resp = (HttpServletResponse) response;
        resp.setHeader("Access-Control-Allow-Origin", "*");
        resp.setHeader("Access-Control-Allow-Methods", "POST, GET, PUT, OPTIONS, DELETE");
        resp.setHeader("Access-Control-Max-Age", "3600");
        resp.setHeader("Access-Control-Allow-Headers", "x-requested-with, Content-Type");
        resp.setHeader("Access-Control-Allow-Credentials", "true");
        chain.doFilter(request, response);
    }
    
    @Override
    public void destroy() {
    
    }
}
